/* ============================================================
   Clonalyzer-2  –  style.css  (Material Design 3 / Google M3)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&family=Roboto+Mono:wght@400;500&display=swap');
@import url('https://fonts.googleapis.com/icon?family=Material+Icons');

:root {
  /* MD3 key colors */
  --md-primary:            #1a73e8;
  --md-on-primary:         #ffffff;
  --md-primary-container:  #d3e4fd;
  --md-on-primary-container: #001d35;
  --md-primary-dark:       #1557b0;
  --md-primary-light:      #e8f0fe;

  --md-secondary:           #5c6bc0;
  --md-secondary-container: #e1e5fb;

  --md-tertiary:            #0b8043;
  --md-tertiary-container:  #c8f5d6;

  --md-error:              #b3261e;
  --md-error-container:    #f9dedc;
  --md-success:            #1e8e3e;

  /* MD3 surfaces (Material You tonal surface stack) */
  --md-surface:            #ffffff;
  --md-surface-1:          #f4f7fd;  /* elevation level 1 tonal overlay */
  --md-surface-2:          #eef3fc;  /* elevation level 2 tonal overlay */
  --md-surface-variant:    #e7ebf0;
  --md-on-surface-variant: #44464f;
  --md-background:         #f8f9fa;
  --md-outline:            #79747e;
  --md-outline-variant:    #cac4d0;

  /* Legacy aliases (kept for existing rules) */
  --md-border:        #dadce0;
  --md-text:          #1c1b1f;
  --md-text-secondary:#49454f;

  /* Elevation / shadow system */
  --md-shadow-1: 0 1px 2px rgba(0,0,0,.10), 0 1px 3px 1px rgba(0,0,0,.07);
  --md-shadow-2: 0 1px 4px rgba(0,0,0,.12), 0 2px 8px 2px rgba(0,0,0,.09);
  --md-shadow-3: 0 4px 8px rgba(0,0,0,.12), 0 6px 16px 4px rgba(0,0,0,.08);
  --md-shadow-fab: 0 3px 5px -1px rgba(0,0,0,.2), 0 6px 10px 0 rgba(0,0,0,.14), 0 1px 18px 0 rgba(0,0,0,.12);

  /* Shape scale */
  --md-shape-xs:   4px;
  --md-shape-sm:   8px;
  --md-shape-md:   12px;
  --md-shape-lg:   16px;
  --md-shape-xl:   28px;
  --md-shape-full: 9999px;

  /* Layout */
  --hc-header-height: 88px;
  --hc-footer-height: 56px;
  --hc-radius-sm: 8px;
  --hc-radius-md: 14px;
  --hc-shadow-sm: 0 1px 4px rgba(60,64,67,.16);
  --hc-shadow-md: 0 4px 14px rgba(60,64,67,.18);
}

/* ── Base ── */
*, *::before, *::after { box-sizing: border-box; }

body {
  background: var(--md-background);
  color: var(--md-text);
  font-family: 'Roboto', system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  margin: 0;
}

/* ── Header / footer de suite ── */
.hc-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--hc-header-height);
  z-index: 1001;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--md-border);
  box-shadow: 0 1px 8px rgba(60,64,67,.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0 1.25rem;
  box-sizing: border-box;
  overflow: hidden;
}

.hc-header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  flex: 1 1 auto;
  max-width: 100%;
  overflow: hidden;
}

.hc-logo {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(135deg, #f5f9ff 0%, #e8f0fe 100%);
  border: 1px solid #c5d9fb;
  box-shadow: var(--hc-shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.hc-logo-glyph {
  color: var(--md-primary);
  font-size: 22px;
  line-height: 1;
}

.hc-header-text {
  min-width: 0;
  min-height: 100%;
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hc-title-line {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  flex-wrap: wrap;
  min-width: 0;
}

.hc-header h1 {
  font-family: 'Google Sans', 'Roboto', sans-serif;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--md-text);
  margin: 0;
  letter-spacing: -0.02em;
  line-height: 1.15;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.hc-tagline {
  font-size: 0.83rem;
  color: var(--md-text-secondary);
  margin: 0;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.hc-header-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
  min-width: 0;
}

.hc-suite-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 0.85rem;
  border-radius: 14px;
  background: linear-gradient(135deg, #F5F9FF 0%, #E8F0FE 100%);
  border: 1px solid #C5D9FB;
  box-shadow: var(--hc-shadow-sm);
  min-width: 0;
  text-decoration: none !important;
  transition: transform 110ms ease, box-shadow 130ms ease, background 130ms ease;
}

.hc-suite-pill:hover {
  transform: translateY(-1px);
  box-shadow: var(--hc-shadow-md);
  background: linear-gradient(135deg, #EEF5FF 0%, #DCEBFF 100%);
}

.hc-suite-pill:visited {
  color: inherit;
}

.hc-suite-label {
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #4285F4;
  white-space: nowrap;
  text-transform: uppercase;
}

/* Header action buttons */
.hc-header .btn-md-text {
  font-size: 13px;
  font-weight: 500;
  color: var(--md-text-secondary);
  background: none;
  border: none;
  padding: 8px 12px;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background 150ms ease, color 150ms ease;
}
.hc-header .btn-md-text:hover {
  background: var(--md-background);
  color: var(--md-text);
}

/* ── Main container ── */
.md-main {
  max-width: 1240px;
  margin: 0 auto;
  padding: calc(var(--hc-header-height) + 32px) 24px calc(var(--hc-footer-height) + 32px);
}

/* ── Cards (MD3 Filled Card) ── */
.md-card {
  background: var(--md-surface);
  border-radius: var(--md-shape-lg);
  box-shadow: var(--md-shadow-1);
  padding: 24px;
  margin-top: 20px;
  border: 1px solid var(--md-outline-variant);
  transition: box-shadow 200ms ease;
}
.md-card:first-child { margin-top: 0; }
.md-card:hover { box-shadow: var(--md-shadow-2); }

.md-card-title {
  font-size: 16px;
  font-weight: 500;
  color: var(--md-text);
  margin: 0 0 4px;
  letter-spacing: 0.01em;
}
.md-card-subtitle {
  font-size: 13px;
  color: var(--md-text-secondary);
  margin: 0 0 20px;
  line-height: 1.5;
}

/* ── Buttons (MD3 button system) ── */
/* Filled button */
.btn-md-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--md-primary);
  color: var(--md-on-primary);
  border: none;
  border-radius: var(--md-shape-full);
  padding: 10px 24px;
  font-family: 'Roboto', sans-serif;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: box-shadow 150ms ease, background 150ms ease;
  text-decoration: none;
  box-shadow: var(--md-shadow-1);
  position: relative;
  overflow: hidden;
}
.btn-md-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background 150ms ease;
}
.btn-md-primary:hover::after { background: rgba(255,255,255,.08); }
.btn-md-primary:hover { box-shadow: var(--md-shadow-2); color: var(--md-on-primary); }
.btn-md-primary:active { box-shadow: none; }

/* Outlined button */
.btn-md-outlined {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--md-primary);
  border: 1px solid var(--md-outline);
  border-radius: var(--md-shape-full);
  padding: 9px 23px;
  font-family: 'Roboto', sans-serif;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: background 150ms ease, border-color 150ms ease;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}
.btn-md-outlined::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(26,115,232,0);
  transition: background 150ms ease;
}
.btn-md-outlined:hover::after { background: rgba(26,115,232,.06); }
.btn-md-outlined:hover { border-color: var(--md-primary); color: var(--md-primary); }

/* Tonal button (MD3 Filled Tonal) */
.btn-md-tonal {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  border: none;
  border-radius: var(--md-shape-full);
  padding: 10px 24px;
  font-family: 'Roboto', sans-serif;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: box-shadow 150ms ease, background 150ms ease;
  text-decoration: none;
}
.btn-md-tonal:hover { box-shadow: var(--md-shadow-1); filter: brightness(0.96); color: var(--md-on-primary-container); }

/* Text button */
.btn-md-text-sm {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  color: var(--md-primary);
  border: none;
  border-radius: var(--md-shape-full);
  padding: 6px 12px;
  font-family: 'Roboto', sans-serif;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 150ms ease;
  text-decoration: none;
}
.btn-md-text-sm:hover { background: rgba(26,115,232,.08); color: var(--md-primary); }

/* Extended FAB (Download) */
.btn-md-fab {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  border: none;
  border-radius: var(--md-shape-lg);
  padding: 14px 28px;
  font-family: 'Roboto', sans-serif;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.01em;
  cursor: pointer;
  box-shadow: var(--md-shadow-2);
  transition: box-shadow 200ms ease, filter 150ms ease, transform 150ms ease;
  text-decoration: none;
}
.btn-md-fab:hover {
  box-shadow: var(--md-shadow-3);
  transform: translateY(-1px);
  filter: brightness(0.96);
  color: var(--md-on-primary-container);
}
.btn-md-fab .material-icons { font-size: 20px; }

/* ── Init / Progress (MD3 Linear Progress) ── */
.md-progress-track {
  height: 4px;
  border-radius: var(--md-shape-full);
  background: var(--md-surface-variant);
  overflow: hidden;
  position: relative;
}
.md-progress-bar {
  height: 100%;
  border-radius: var(--md-shape-full);
  background: var(--md-primary);
  transition: width .5s cubic-bezier(.4,0,.2,1);
}
/* MD3 Circular Progress indicator */
.md-spinner {
  width: 40px;
  height: 40px;
  border: 3.5px solid var(--md-surface-variant);
  border-top-color: var(--md-primary);
  border-radius: 50%;
  animation: md-spin .9s cubic-bezier(.4,0,.2,1) infinite;
  margin: 0 auto 20px;
}
@keyframes md-spin { to { transform: rotate(360deg); } }

/* ── Drop zone (MD3 Container style) ── */
.md-drop-zone {
  border: 2px dashed var(--md-outline-variant);
  border-radius: var(--md-shape-lg);
  padding: 52px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color .25s cubic-bezier(.4,0,.2,1),
              background .25s cubic-bezier(.4,0,.2,1);
  background: var(--md-surface-1);
}
.md-drop-zone:hover,
.md-drop-zone.drag-over {
  border-color: var(--md-primary);
  background: var(--md-primary-light);
}
.md-drop-zone .md-upload-icon {
  font-size: 48px;
  color: var(--md-primary);
  margin-bottom: 16px;
}
.md-drop-zone .md-drop-title {
  font-size: 16px;
  font-weight: 500;
  color: var(--md-text);
  margin: 0 0 6px;
}
.md-drop-zone .md-drop-sub {
  font-size: 13px;
  color: var(--md-text-secondary);
  margin: 0;
}

/* ── Drop zone: file-selected state ── */
.md-drop-zone.dz-ready {
  border-style: solid;
  border-color: var(--md-primary);
  background: var(--md-primary-light);
}
.dz-icon-ready svg {
  color: var(--md-tertiary) !important;
}
.dz-filename {
  font-family: 'Roboto Mono', monospace;
  font-size: 14px !important;
  color: var(--md-primary) !important;
  word-break: break-all;
}

/* ── CSV hint link ── */
.csv-hint-link {
  text-align: center;
  font-size: 12.5px;
  color: var(--md-text-secondary);
  margin: 8px 0 16px;
}

/* ── Analyze button row ── */
.analyze-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding-top: 8px;
}
.btn-analyze {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 36px;
  background: var(--md-primary);
  color: #fff;
  border: none;
  border-radius: var(--md-shape-full);
  font-size: 15px;
  font-weight: 600;
  font-family: 'Roboto', sans-serif;
  cursor: pointer;
  transition: background 0.18s ease, box-shadow 0.18s ease, transform 0.12s ease;
  box-shadow: var(--md-shadow-1);
  letter-spacing: 0.01em;
}
.btn-analyze:hover:not(:disabled) {
  background: var(--md-primary-dark);
  box-shadow: var(--md-shadow-2);
  transform: translateY(-1px);
}
.btn-analyze:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: var(--md-shadow-1);
}
.btn-analyze:disabled {
  background: var(--md-outline-variant);
  color: var(--md-text-secondary);
  cursor: not-allowed;
  box-shadow: none;
}
.analyze-hint {
  font-size: 12px;
  color: var(--md-text-secondary);
  margin: 0;
}
.analyze-hint.analyze-hint-ready {
  color: var(--md-tertiary);
  font-weight: 500;
}

/* ── Tabs (MD3 Primary Tabs) ── */
.nav-tabs {
  border-bottom: 1px solid var(--md-outline-variant);
  margin-bottom: 24px;
  gap: 0;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-tabs::-webkit-scrollbar { display: none; }
.nav-tabs .nav-item { flex-shrink: 0; }
.nav-tabs .nav-link {
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  border-radius: 0;
  padding: 12px 20px 9px;
  font-family: 'Roboto', sans-serif;
  font-size: 13px;
  font-weight: 500;
  color: var(--md-on-surface-variant);
  cursor: pointer;
  letter-spacing: 0.01em;
  transition: color 200ms cubic-bezier(.4,0,.2,1),
              border-color 200ms cubic-bezier(.4,0,.2,1),
              background 200ms cubic-bezier(.4,0,.2,1);
  white-space: nowrap;
  margin-bottom: -1px;
  display: flex;
  align-items: center;
  gap: 6px;
  position: relative;
}
.nav-tabs .nav-link::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 4px 4px 0 0;
  background: rgba(26,115,232,0);
  transition: background 200ms ease;
}
.nav-tabs .nav-link:hover::after { background: rgba(26,115,232,.06); }
.nav-tabs .nav-link:hover { color: var(--md-primary); }
.nav-tabs .nav-link.active {
  color: var(--md-primary);
  border-bottom-color: var(--md-primary);
  background: none;
  font-weight: 500;
}

/* ── Clone color pickers ── */
.clone-color-input {
  width: 34px;
  height: 28px;
  padding: 2px 3px;
  border: 1px solid var(--md-border);
  border-radius: 6px;
  cursor: pointer;
  background: none;
}
.clone-color-input::-webkit-color-swatch-wrapper { padding: 0; }
.clone-color-input::-webkit-color-swatch { border: none; border-radius: 4px; }
.clone-color-input::-moz-color-swatch    { border: none; border-radius: 4px; }

/* ── Section divider in plot grids (MD3 Divider + Label) ── */
.plots-section-header {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--md-primary);
  padding: 10px 0 8px;
  border-bottom: 1px solid var(--md-outline-variant);
  margin-bottom: 4px;
  margin-top: 20px;
}
.col-12:first-child .plots-section-header { margin-top: 0; }

/* ── Plotly charts ── */
.plotly-chart {
  width: 100%;
  min-height: 380px;
  border-radius: 4px;
  overflow: hidden;
}

/* ── Chips (MD3 Assist / Filter Chip) ── */
.md-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--md-surface-1);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--md-shape-sm);
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--md-text);
  transition: background 150ms ease, box-shadow 150ms ease;
}
.md-chip:hover { background: var(--md-surface-2); box-shadow: var(--md-shadow-1); }
.md-chip .material-icons { font-size: 16px; color: var(--md-primary); }

/* ── Settings row (MD3 form fields) ── */
.md-settings-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.md-settings-row label {
  font-size: 13px;
  color: var(--md-text-secondary);
  font-weight: 500;
}
.md-settings-row .form-control,
.md-settings-row .form-select {
  font-size: 13px;
  border-color: var(--md-outline-variant);
  border-radius: var(--md-shape-xs);
  color: var(--md-text);
  max-width: 110px;
  background: var(--md-surface);
}
.md-settings-row .form-control:focus,
.md-settings-row .form-select:focus {
  border-color: var(--md-primary);
  box-shadow: 0 0 0 2px rgba(26,115,232,.18);
  outline: none;
}

/* ── Checkboxes (MD3 style) ── */
.form-check-input {
  border-color: var(--md-outline);
  cursor: pointer;
}
.form-check-input:checked {
  background-color: var(--md-primary);
  border-color: var(--md-primary);
}
.form-check-input:focus { box-shadow: 0 0 0 3px rgba(26,115,232,.18); outline: none; }
.form-check-label { font-size: 13px; color: var(--md-text); cursor: pointer; }

/* ── CSV spreadsheet preview ── */
.csv-preview-wrap {
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--md-shape-md);
  overflow: hidden;
  background: var(--md-surface);
  margin-bottom: 16px;
}
.csv-legend {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  padding: 9px 14px;
  background: var(--md-surface-1);
  border-bottom: 1px solid var(--md-outline-variant);
}
.csv-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--md-text-secondary);
  font-family: 'Roboto', sans-serif;
}
.csv-legend-swatch {
  display: inline-block;
  width: 13px;
  height: 13px;
  border-radius: 3px;
  flex-shrink: 0;
  border: 1px solid transparent;
}
.csv-swatch-req { background: #e3eeff; border-color: #93b8f5; }
.csv-swatch-opt { background: #fff8e1; border-color: #f5c842; }
.csv-swatch-ign { background: #f2f2f2; border-color: #d0d0d0; }

.csv-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.csv-table {
  border-collapse: collapse;
  font-family: 'Roboto Mono', monospace;
  font-size: 11px;
  white-space: nowrap;
  width: 100%;
  min-width: max-content;
}

/* Column header (thead) — acts like Excel's frozen header row */
.csv-table thead tr th {
  padding: 6px 11px;
  text-align: center;
  font-weight: 700;
  font-size: 10.5px;
  letter-spacing: 0.01em;
  border-right: 1px solid rgba(255,255,255,0.25);
  border-bottom: 2px solid rgba(0,0,0,0.15);
  position: sticky;
  top: 0;
}
.csv-th-rownum {
  background: #5f6368 !important;
  width: 36px;
  min-width: 36px;
  border-right: 2px solid rgba(0,0,0,0.2) !important;
}
.csv-th-req {
  background: #1a73e8;
  color: #fff;
}
.csv-th-opt {
  background: #b45309;
  color: #fff;
}
/* Thick separator before first optional column */
.csv-th-opt:first-of-type,
.csv-td-opt:first-of-type {
  border-left: 2.5px solid #d97706 !important;
}

/* Row number column (sticky left) */
.csv-td-rownum {
  background: #f0f0f0;
  color: #888;
  font-size: 10px;
  font-weight: 600;
  text-align: center;
  padding: 5px 8px;
  border-right: 2px solid #d8d8d8;
  position: sticky;
  left: 0;
  z-index: 1;
}

/* Row 1 — human-readable labels, ignored */
.csv-tr-ignored td {
  background: #f7f7f7;
  color: #999;
  font-style: italic;
  padding: 5px 11px;
  border-bottom: 1px solid #e8e8e8;
  border-right: 1px solid #ebebeb;
}
.csv-tr-ignored .csv-td-rownum {
  background: #ececec;
  font-style: normal;
  border-bottom-color: #e8e8e8;
}
.csv-tr-ignored .csv-td-opt {
  background: #fdf9ec;
}

/* Row 2 — exact column names */
.csv-tr-colnames td {
  background: #e3eeff;
  color: #1a4f9e;
  font-weight: 700;
  padding: 6px 11px;
  border-bottom: 2px solid #93b8f5;
  border-right: 1px solid #b8d0f8;
}
.csv-tr-colnames .csv-td-rownum {
  background: #d2e4fc;
  color: #1a73e8;
  border-bottom-color: #93b8f5;
}
.csv-tr-colnames .csv-td-opt {
  background: #fef3c7;
  color: #92400e;
  border-bottom-color: #f5c842;
  border-right-color: #f5d87a;
}

/* Data rows (Row 3+) */
.csv-tr-data td {
  background: #fff;
  color: var(--md-text);
  padding: 5px 11px;
  border-bottom: 1px solid #eee;
  border-right: 1px solid #eee;
  text-align: right;
}
/* Left-align text columns */
.csv-tr-data td:nth-child(3),
.csv-tr-data td:nth-child(4),
.csv-tr-data td:nth-child(5) {
  text-align: left;
}
.csv-tr-data .csv-td-opt {
  background: #fffef5;
}
.csv-tr-data:last-of-type td {
  border-bottom: none;
}

/* Continuation row */
.csv-tr-more td {
  background: #fff;
  color: #ccc;
  text-align: center;
  padding: 4px 11px;
  font-size: 13px;
  border-right: 1px solid #eee;
  border-bottom: none;
}
.csv-tr-more .csv-td-opt {
  background: #fffef5;
}

/* Footnotes bar */
.csv-footnotes {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 9px 14px;
  background: var(--md-surface-1);
  border-top: 1px solid var(--md-outline-variant);
  font-size: 11px;
  color: var(--md-text-secondary);
  font-family: 'Roboto', sans-serif;
  line-height: 1.5;
}

/* ── Divider ── */
.md-divider {
  border: none;
  border-top: 1px solid var(--md-border);
  margin: 24px 0;
}

/* ── Custom correlations ── */
.md-section-title {
  font-size: 16px;
  font-weight: 500;
  color: var(--md-text);
  margin: 0 0 4px;
  letter-spacing: 0.01em;
}
.md-section-subtitle {
  font-size: 13px;
  color: var(--md-text-secondary);
  margin: 0 0 16px;
  line-height: 1.5;
}
.form-select {
  border-color: var(--md-outline-variant);
  border-radius: var(--md-shape-xs);
  font-size: 13px;
  color: var(--md-text);
  background-color: var(--md-surface);
}
.form-select:focus {
  border-color: var(--md-primary);
  box-shadow: 0 0 0 2px rgba(26,115,232,.18);
  outline: none;
}

/* ── Action bar (MD3 Bottom App Bar–inspired) ── */
.md-action-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  padding: 20px 24px;
  background: var(--md-surface-2);
  border-radius: var(--md-shape-lg);
  border: 1px solid var(--md-outline-variant);
  box-shadow: var(--md-shadow-1);
  margin-top: 20px;
}
.md-action-bar .md-action-hint {
  font-size: 12px;
  color: var(--md-text-secondary);
  margin-left: auto;
}

/* ── Footer de suite ── */
.hc-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--hc-footer-height);
  width: 100%;
  background: rgba(248, 249, 250, 0.96);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-top: 1px solid #E0E0E0;
  box-shadow: 0 -1px 8px rgba(60,64,67,0.07);
  z-index: 9999;
  box-sizing: border-box;
}

.hc-footer-inner {
  height: 100%;
  padding: 0 1.6rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  font-family: 'Roboto', 'Google Sans', sans-serif;
}

.hc-footer-suite {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.hc-footer-name {
  font-size: 0.83rem;
  font-weight: 700;
  color: #4285F4;
  white-space: nowrap;
}

.hc-footer-slogan {
  font-size: 0.67rem;
  color: #5F6368;
  white-space: nowrap;
  font-style: italic;
}

.hc-footer-author {
  font-size: 0.78rem;
  color: #5F6368;
  white-space: nowrap;
  margin-left: auto;
}

.hc-footer-github {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 0.44rem 1.05rem;
  border-radius: 999px;
  background: #1e2330;
  color: #FFFFFF !important;
  font-size: 0.78rem;
  font-weight: 600;
  text-decoration: none !important;
  transition: background 130ms ease, transform 110ms ease, box-shadow 130ms ease;
  box-shadow: 0 1px 4px rgba(0,0,0,0.20);
  flex-shrink: 0;
  font-family: 'Google Sans', 'Roboto', sans-serif;
}

.hc-footer-github svg {
  flex-shrink: 0;
}

.hc-footer-github:hover {
  background: #2d3348;
  transform: translateY(-1px);
  box-shadow: 0 3px 9px rgba(0,0,0,0.25);
}

@media (max-width: 900px) {
  :root {
    --hc-header-height: 80px;
  }

  .hc-header {
    padding: 0 1rem;
  }

  .hc-logo {
    width: 40px;
    height: 40px;
  }

  .hc-logo-glyph {
    font-size: 20px;
  }

  .hc-header h1 {
    font-size: 0.98rem;
  }

  .hc-tagline {
    font-size: 0.76rem;
  }

  .hc-suite-label {
    font-size: 0.72rem;
    white-space: normal;
  }
}

/* ── Methods modal (MD3 Dialog) ── */
#methodsModal .modal-dialog { max-width: 780px; }
#methodsModal .modal-content {
  border-radius: var(--md-shape-xl) !important;
  border: 1px solid var(--md-outline-variant) !important;
  box-shadow: var(--md-shadow-3) !important;
  overflow: hidden;
}
#methodsModal .modal-body   { max-height: 78vh; overflow-y: auto; }
#methodsModal .modal-title  { font-size: 18px; font-weight: 500; color: var(--md-text); }
#methodsModal h5 { color: var(--md-primary); font-weight: 500; font-size: 15px; margin-top: 24px; }
#methodsModal h6 { font-weight: 500; font-size: 14px; margin-top: 16px; }
#methodsModal p,
#methodsModal li { font-size: 13px; line-height: 1.75; color: var(--md-text); }
#methodsModal .eq-block {
  background: var(--md-surface-1);
  border-left: 3px solid var(--md-primary);
  border-radius: var(--md-shape-xs) var(--md-shape-sm) var(--md-shape-sm) var(--md-shape-xs);
  padding: 10px 16px;
  margin: 10px 0;
  overflow-x: auto;
  font-family: 'Roboto Mono', monospace;
  font-size: 12px;
}
#methodsModal .tag-batch    { background: var(--md-tertiary-container); color: var(--md-tertiary); padding: 2px 10px; border-radius: var(--md-shape-sm); font-size: 12px; font-weight: 500; }
#methodsModal .tag-fedbatch { background: var(--md-primary-container); color: var(--md-primary); padding: 2px 10px; border-radius: var(--md-shape-sm); font-size: 12px; font-weight: 500; }
#methodsModal table { font-size: 13px; }
#methodsModal code { background: var(--md-surface-1); border: 1px solid var(--md-outline-variant); padding: 1px 5px; border-radius: var(--md-shape-xs); font-family: 'Roboto Mono', monospace; font-size: 12px; color: var(--md-text); }
#methodsModal .modal-header { border-bottom: 1px solid var(--md-outline-variant); padding: 18px 24px; background: var(--md-surface-1); }
#methodsModal .modal-footer { border-top: 1px solid var(--md-outline-variant); padding: 12px 24px; background: var(--md-surface-1); }
#methodsModal .modal-body   { padding: 8px 24px 24px; }

/* ── Bootstrap overrides ── */
.badge.bg-info    { background-color: var(--md-primary-container) !important; color: var(--md-on-primary-container) !important; font-weight: 500; font-size: 12px; border-radius: var(--md-shape-sm); padding: 3px 10px; }
.badge.bg-warning { background-color: #fef7e0 !important; color: #b06000 !important; font-weight: 500; font-size: 12px; border-radius: var(--md-shape-sm); padding: 3px 10px; }

/* ── Bootstrap .card → MD3 Elevated Card override ── */
.card {
  background: var(--md-surface) !important;
  border: 1px solid var(--md-outline-variant) !important;
  border-radius: var(--md-shape-md) !important;
  box-shadow: var(--md-shadow-1) !important;
  transition: box-shadow 200ms ease !important;
}
.card:hover { box-shadow: var(--md-shadow-2) !important; }
.card-header {
  background: var(--md-surface-1) !important;
  border-bottom: 1px solid var(--md-outline-variant) !important;
  border-radius: var(--md-shape-md) var(--md-shape-md) 0 0 !important;
  font-size: 11px !important;
  font-weight: 600 !important;
  color: var(--md-on-surface-variant) !important;
  letter-spacing: 0.06em;
  padding: 10px 16px !important;
  text-transform: uppercase;
}
.card-body { padding: 8px !important; }

/* ── Info cards (MD3 Tonal Surface Cards) ── */
.info-stat-card {
  background: var(--md-surface);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--md-shape-lg);
  padding: 20px 16px 18px;
  text-align: center;
  box-shadow: var(--md-shadow-1);
  transition: box-shadow 200ms cubic-bezier(.4,0,.2,1),
              transform 200ms cubic-bezier(.4,0,.2,1);
  height: 100%;
  position: relative;
  overflow: hidden;
}
.info-stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--md-primary);
  border-radius: var(--md-shape-lg) var(--md-shape-lg) 0 0;
}
.info-stat-card:hover {
  box-shadow: var(--md-shadow-2);
  transform: translateY(-3px);
}
.info-stat-value {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--md-primary);
  line-height: 1.05;
  font-family: 'Google Sans', 'Roboto', sans-serif;
  letter-spacing: -0.03em;
  margin-top: 4px;
}
.info-stat-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--md-on-surface-variant);
  margin-top: 6px;
}
.info-stat-detail {
  font-size: 12px;
  color: var(--md-text-secondary);
  margin-top: 8px;
  line-height: 1.5;
}

/* ── Upload settings group (MD3 Outlined Container) ── */
.settings-group {
  background: var(--md-surface-1);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--md-shape-md);
  padding: 16px 20px;
  margin-bottom: 16px;
}
.settings-group-title {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--md-primary);
  margin-bottom: 14px;
}
.settings-group-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--md-text-secondary);
  margin-bottom: 10px;
}
.settings-group-context {
  font-size: 12.5px;
  color: var(--md-text-secondary);
  line-height: 1.55;
  margin: -4px 0 14px;
}

/* ── Culture mode radio cards (MD3) ── */
.culture-mode-selector {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.culture-mode-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  border-radius: var(--md-shape-md);
  border: 1.5px solid var(--md-outline-variant);
  background: var(--md-surface);
  cursor: pointer;
  flex: 1;
  min-width: 260px;
  transition: border-color 0.18s ease, background 0.18s ease;
}
.culture-mode-card input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.culture-mode-card:hover {
  border-color: var(--md-primary);
  background: var(--md-surface-1);
}
.culture-mode-card.selected {
  background: var(--md-primary-container);
  border-color: var(--md-primary);
  border-width: 2px;
}
.culture-mode-icon {
  font-size: 22px;
  color: var(--md-text-secondary);
  margin-top: 1px;
  flex-shrink: 0;
  transition: color 0.18s ease;
}
.culture-mode-card.selected .culture-mode-icon {
  color: var(--md-primary);
}
.culture-mode-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--md-text-primary);
  margin-bottom: 2px;
  display: flex;
  align-items: center;
  gap: 7px;
  flex-wrap: wrap;
}
.culture-mode-badge {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--md-text-secondary);
  background: var(--md-surface-variant);
  border-radius: var(--md-shape-full);
  padding: 1px 8px;
  line-height: 1.6;
}
.culture-mode-card.selected .culture-mode-badge {
  background: rgba(26, 115, 232, 0.15);
  color: var(--md-primary-dark);
}
.culture-mode-subtitle {
  font-size: 11px;
  font-weight: 500;
  color: var(--md-text-secondary);
  margin-bottom: 8px;
  letter-spacing: 0.01em;
}
.culture-mode-desc {
  font-size: 11.5px;
  color: var(--md-text-secondary);
  line-height: 1.55;
  margin-bottom: 10px;
}
.culture-mode-hint {
  font-size: 11px;
  color: var(--md-tertiary);
  display: flex;
  align-items: center;
  gap: 4px;
}
.culture-mode-hint code {
  background: rgba(11, 128, 67, 0.1);
  color: var(--md-tertiary);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 10.5px;
}
.culture-mode-reqs {
  border-top: 1px solid var(--md-outline-variant);
  padding-top: 9px;
  margin-top: 4px;
}
.culture-mode-req-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--md-text-secondary);
  margin-bottom: 6px;
}
.culture-mode-req-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 11px;
  color: var(--md-text-secondary);
  line-height: 1.5;
  margin-bottom: 4px;
  flex-wrap: wrap;
}
.culture-mode-req-row code {
  background: rgba(0, 0, 0, 0.07);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 10.5px;
  font-family: monospace;
  white-space: nowrap;
  flex-shrink: 0;
  color: var(--md-text);
}
.culture-mode-card.selected .culture-mode-reqs {
  border-top-color: rgba(26, 115, 232, 0.25);
}
.culture-mode-desc code {
  background: rgba(0, 0, 0, 0.06);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 11px;
  font-family: monospace;
}

/* ── Fluorescence channel grid ── */
.fluor-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.fluor-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--md-shape-sm);
  border: 1px solid var(--md-outline-variant);
  background: var(--md-surface);
  transition: border-color 0.15s ease, background 0.15s ease;
  cursor: pointer;
}
.fluor-row:has(.fluor-check:checked) {
  border-color: var(--md-primary);
  background: var(--md-primary-light);
}
.fluor-check {
  flex-shrink: 0;
  cursor: pointer;
}
.fluor-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
  opacity: 0.85;
}
.fluor-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}
.fluor-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--md-text);
  cursor: pointer;
  line-height: 1.3;
}
.fluor-desc {
  font-size: 11px;
  color: var(--md-text-secondary);
  line-height: 1.4;
}

/* ── PDF modal (MD3 dialog) ── */
.md-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.48);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  backdrop-filter: blur(2px);
}
.md-modal-overlay[hidden] { display: none; }
.md-modal {
  background: var(--md-surface);
  border-radius: var(--md-shape-lg);
  width: min(580px, 100%);
  max-height: 82vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 40px rgba(0,0,0,0.22);
  animation: modalIn 0.18s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: scale(0.97) translateY(8px); }
  to   { opacity: 1; transform: scale(1)    translateY(0);    }
}
.md-modal-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--md-outline-variant);
  flex-shrink: 0;
}
.md-modal-title {
  flex: 1;
  font-size: 17px;
  font-weight: 600;
  margin: 0;
  color: var(--md-text-primary);
}
.md-modal-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--md-text-secondary);
  padding: 6px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  transition: background 0.15s;
}
.md-modal-close:hover { background: var(--md-surface-1); }
.md-modal-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px 24px;
}
.md-modal-hint {
  font-size: 13px;
  color: var(--md-text-secondary);
  margin: 0 0 12px;
}
.md-modal-select-row {
  display: flex;
  gap: 4px;
  margin-bottom: 14px;
}
.md-modal-footer {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 8px;
  padding: 14px 24px;
  border-top: 1px solid var(--md-outline-variant);
  flex-shrink: 0;
}

/* Chart list inside modal */
.pdf-chart-group { margin-bottom: 18px; }
.pdf-chart-group-title {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--md-primary);
  margin-bottom: 6px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--md-outline-variant);
}
.pdf-chart-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  border-radius: var(--md-shape-sm);
  cursor: pointer;
  transition: background 0.13s;
  user-select: none;
}
.pdf-chart-item:hover { background: var(--md-surface-1); }
.pdf-chart-item input[type="checkbox"] {
  width: 17px;
  height: 17px;
  accent-color: var(--md-primary);
  cursor: pointer;
  flex-shrink: 0;
}
.pdf-chart-icon {
  font-size: 18px;
  color: var(--md-text-secondary);
  flex-shrink: 0;
}
.pdf-chart-label {
  font-size: 13px;
  color: var(--md-text-primary);
  flex: 1;
  text-transform: capitalize;
}

/* ── Drop zone enhanced ── */
.md-drop-zone {
  position: relative;
  overflow: hidden;
}
.md-drop-zone::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 40%, rgba(26,115,232,0.04) 0%, transparent 70%);
  pointer-events: none;
  transition: opacity 0.3s ease;
  opacity: 0;
}
.md-drop-zone:hover::before,
.md-drop-zone.drag-over::before {
  opacity: 1;
}
.md-drop-zone .md-upload-icon svg {
  transition: transform 0.25s ease, color 0.2s ease;
  color: var(--md-primary);
  opacity: 0.7;
}
.md-drop-zone:hover .md-upload-icon svg,
.md-drop-zone.drag-over .md-upload-icon svg {
  transform: translateY(-4px) scale(1.08);
  opacity: 1;
}

/* ── Tab icons ── */
.nav-tabs .nav-link .tab-icon {
  font-size: 16px;
  vertical-align: -3px;
  margin-right: 4px;
  opacity: 0.6;
  transition: opacity 150ms ease;
}
.nav-tabs .nav-link.active .tab-icon,
.nav-tabs .nav-link:hover .tab-icon {
  opacity: 1;
}

/* ── Axis range cards (MD3 Outlined Container) ── */
.axis-range-card {
  background: var(--md-surface-1);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--md-shape-md);
  padding: 14px 16px;
  height: 100%;
  transition: border-color 150ms ease;
}
.axis-range-card:focus-within {
  border-color: var(--md-primary);
}
.axis-range-card .axis-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--md-primary);
  margin-bottom: 10px;
}
.axis-range-card .form-control-sm {
  font-size: 13px;
  border-color: var(--md-outline-variant);
  border-radius: var(--md-shape-xs);
  background: var(--md-surface);
}
.axis-range-card .form-control-sm:focus {
  border-color: var(--md-primary);
  box-shadow: 0 0 0 2px rgba(26,115,232,.18);
  outline: none;
}

/* ── Clone color chips (MD3 Filter Chip) ── */
.clone-color-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--md-surface-1);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--md-shape-sm);
  padding: 5px 14px 5px 7px;
  transition: border-color 200ms ease, box-shadow 200ms ease, background 200ms ease;
}
.clone-color-chip:hover {
  border-color: var(--md-primary);
  background: var(--md-surface-2);
  box-shadow: var(--md-shadow-1);
}
.clone-color-chip .clone-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--md-text);
}

/* ── Fade-in animation for results ── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
#results-section > * {
  animation: fadeInUp 0.35s ease forwards;
}
#results-section > *:nth-child(1) { animation-delay: 0.05s; }
#results-section > *:nth-child(2) { animation-delay: 0.12s; }
#results-section > *:nth-child(3) { animation-delay: 0.19s; }
#results-section > *:nth-child(4) { animation-delay: 0.26s; }

/* ── Init step list (MD3 progress stepper) ── */
.init-steps {
  list-style: none;
  padding: 0;
  margin: 24px auto 0;
  max-width: 320px;
  text-align: left;
}
.init-step {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 7px 0;
  font-size: 13px;
  color: var(--md-on-surface-variant);
  transition: color 0.3s cubic-bezier(.4,0,.2,1);
}
.init-step.active {
  color: var(--md-primary);
  font-weight: 500;
}
.init-step.done {
  color: var(--md-success);
}
.init-step-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--md-surface-variant);
  border: 2px solid var(--md-outline-variant);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
  color: var(--md-on-surface-variant);
  transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
}
.init-step.active .init-step-dot {
  background: var(--md-primary);
  border-color: var(--md-primary);
  color: #fff;
  box-shadow: 0 0 0 4px rgba(26,115,232,.15);
}
.init-step.done .init-step-dot {
  background: var(--md-tertiary-container);
  border-color: var(--md-tertiary);
  color: var(--md-tertiary);
}

/* ── Process section ── */
.process-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--md-on-surface-variant);
  margin-bottom: 6px;
}

/* ── Responsive tweaks for new components ── */
@media (max-width: 680px) {
  .info-stat-value { font-size: 1.8rem; }
  .axis-range-card { margin-bottom: 8px; }
}

/* ── Responsive ── */
@media (max-width: 680px) {
  :root {
    --hc-header-height: 94px;
    --hc-footer-height: 76px;
  }

  .hc-header {
    align-items: center;
    padding: 0 0.8rem;
  }

  .hc-logo {
    width: 36px;
    height: 36px;
  }

  .hc-logo-glyph {
    font-size: 18px;
  }

  .hc-title-line {
    align-items: flex-start;
    gap: 0.2rem;
    flex-direction: column;
    flex-wrap: nowrap;
  }

  .hc-header h1 {
    font-size: 0.9rem;
    white-space: normal;
  }

  .hc-tagline {
    font-size: 0.72rem;
    white-space: normal;
  }

  .hc-suite-pill {
    padding: 0.45rem 0.65rem;
  }

  .hc-suite-label {
    font-size: 0.68rem;
  }

  .md-main {
    padding: calc(var(--hc-header-height) + 20px) 16px calc(var(--hc-footer-height) + 20px);
  }

  .md-card { padding: 16px; }

  .hc-footer-inner {
    padding: 0.45rem 0.9rem;
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 0.35rem 1rem;
  }

  .hc-footer-author { margin-left: 0; }
  .hc-footer-github { margin-left: auto; }
  .md-action-bar .md-action-hint { margin-left: 0; }
}